Options for a huge range of Brass and Stainless steel 2/2 and 3/2 solenoid valves up to 500 BAR
Sizes from 1/8 BSP to DN300 flange.
All voltage options and special requirements are available.
See below for The Connexion Guide to Hazardous Areas.
Or try our valve search guide on the top right, choose the ATEX level of safety you require first and then from there reduce the available valve options. Or simply contact us for FREE ADVISE + ASSISTANCE.
Or Try our Product Selector
on the Top Right Hand Side of this Page.
Equipment For Mines
Group 1
Firedamp Content
Any Firedamp Content
Beyond Limiting
Value
Catagory of equipment which may be used
following 94/9/CE directive
M1
M2
Equipment For Surface Installations
Group II
Zones
0
20
1
21
2
22
Nature Of Atmosphere
G
Gas
D
Dust
G
Gas
D
Dust
G
Gas
D
Dust
Continuously
Present
Not Likely To Be
Present
Accidentally Present
Catagory of equipment which may be used
following
94/9/CE directive
1
2
3
Zones.
Hazardous areas for Group II are further divided into Zones,
these Zones relate to the predicted occurence of when an Explosive Atmosphere may be present in the area.
These Zones are defined as being:
Colour
Zones
Presence of Gas
Red
0
Continuously present (During long periods)
Orange
1
Not Likely to be present (Regular service)
Yellow
2
Accidentally present (short time service never in regular service)
Colour
Zones
Presence of Dust
Red
20
Continuously present (During long periods)
Orange
21
Not Likely to be present (Regular service)
Yellow
22
Accidentally present (short time service never in regular service)
Types of ATEX Explosion Proof Protection Available from Connexion Developments Ltd
Protection
symbol
0
20
1
21
2
22
Description
Symbolic
Drawing
EexmIIT4
"m"
Cenelec
EN50028
Connexion Stock Item
X
X
X
X
Encapsulation.
Refers to a special casing in which the parts of an electrical apparatus
which could ignite an explosive atmosphere by either sparking or heating
are encapsulated in a compound in such a way that this explosive atmosphere cannot be ignited.
EexiaIICT6
"ia"
Cenelec
EN50020/39
Connexion Stock Item
X
X
X
X
X
X
Intrinsically Safe.
Refers to a circuit in which neither sparks or temperature can ignite an
explosive atmosphere. If generated under the service conditions specified
by the standard regulations (Normal and faulty operating conditions)
EexdIICT2 - 6
"d"
Cenelec
EN50018
Manufactured to Order
X
X
X
X
Flameproof enclosure.
Refers to an electrical apparatus whose explosive parts are enclosed
in an explosion proof casing. This casing will resist the pressure generated
by the internal explosion or an explosive mixture and will prevent the
explosion from penatrating to the ambient explosive atmosphere.
Temperature Classes.
Group 1
Temperature <150 C or <450 C according to coal dust accumulation on equipment
Group II
Temperature Class for Gas (G)
Permissible surface temperature
of electrical equipment
T1
T2
T3
T4
T5
T6
450C
300C
200C
135C
100C
85C
Ignition Temperature for Dusts.
The dust ignition temperature depends on its consistancy and its nature. The ignition temperatures for various types of dust are available from reference tables. Connexion have a few common examples below.
Dusts
Ignition Temperature
Clouds
5mm layer
Aluminium
560C
>450C
Charcoal
520C
320C
Coal Dust (Lignite)
380C
225C
Cocoa
590C
250C
Coffe Grounds
580C
290C
Corn
530C
460C
Methyl cellulose
420C
320C
Paper Fibre
570C
335C
Phenolic Resin
530C
>450C
Polyethylene
440C
melts
PVC
700C
>450C
Sugar
490C
460C
Soot
810C
570C
Starch
460C
435C
Toner
520C
melts
Wheat
510C
300C
Connexion Developments Limited, Easton Business Centre, Felix Road, Easton, Bristol, BS5 0HE Tel: 01179415814 Fax: 01179415813 Email: sales@solenoidvalvesuk.com Reg. in England No. 3502257
